(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*

This guide provides a more detailed description of the syntax that is supported along with examples.

This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.

Concept Search - What can I type?

For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.

Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.

Edge following cursor

Publishing Venue

IBM

Abstract

Disclosed is a mechanism for biasing cursor movement to follow the edges of 'fuzzy' graphical objects (such as photographs).
This permits fast cursor movement along an edge, with fine control orthogonal to the edge. The effect is automatically modulated by edge strength; cursor movement is unbiased where the cursor is not near any edge. The disclosure is in two parts. The first describes the general principle and the second gives a fragments of sample code for more precise detail.

Country

Undisclosed

Language

English (United States)

This text was extracted from a PDF file.

At least one non-text object (such as an image or picture) has been suppressed.

This is the abbreviated version, containing approximately
31% of the total text.

Page 1 of 6

Edge following cursor

General

Paint packages (and similar more up-market application packages for medical
imaging etc) frequently include semi-interactive edge detection techniques. These
are typically used for region/mask selection.

In summary, the user clicks at various points along the edge, and the system
tracks the edge between these points.

There are two possible options the system may take where the user does not
click on an edge.1) The system takes the user point, and does its best to track an edge that goes
through it. (Paint Shop Pro option)2) The system finds the nearest point it thinks is an appropriate edge and tracks to it.1) has the disadvantage that the user must make sure that every click is precisely on
an edge, or the result will not be precise. This precision slows the user down.2) has the disadvantage that the user loses precise control.

The solution is that the cursor should be biased but not constrained to track
what the system thinks is the edge (system preguessed edge).

For the purpose of discussion a mouse is the interaction device. The
technique also applies to a tablet (used in relative mode for this operation) or other
interaction device.

A essential part of the mechanism is that the system controls the relationship
between mouse movement and cursor movement: the discussion will (try to) be
precise below in the distinction between these two.

Mouse movements that would normally cause the cursor to move almost
along the system detected edge are forced into cursor movements precisely along
the system detected edge. Thus the user can make a very quick mouse movement
in the general direction of the preguessed edge, and the cursor will precisely track
that edge. This gives the speed of method (2) above where the user and system
agree where the edge should be.

Where the mouse moves in a direction not close to the preguessed edge
direction, the cursor moves in the corresponding direction. This makes it easy for
the user to apply the fine control of method (1) above.

A typical user movement will be a fast movement along the edge to
approximately the right position on the system preguessed edge, followed by a
precise movement approximately orthogonal to that to fix the finely controlled
position. This user selected fine position will be used by the system to determine a
final edge.

It is desirable that for movement (approximately) along the edge a standard
ratio of mouse::pointer speed be used (for fairly quick movement). For movement
orthogonal to the edge, the pointer should move much more slowly relative to the
mouse (for fine control).

Page 2 of 6

start point

mouse movement

cursor movement

Fig 1 -- shows relationship between mouse and cursor movement. Exaggerated:
typically, the mouse movement would be closer to the edge, and the cursor
movement would be imperceptible from the edge.